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48780281 = 114434571
BaseRepresentation
bin1011101000010…
…1001111111001
310101210021222002
42322011033321
544441432111
64501310345
71131424364
oct272051771
9111707862
1048780281
1125598390
12144053b5
13a14c194
14669b0db
15443863b
hex2e853f9

48780281 has 4 divisors (see below), whose sum is σ = 53214864. Its totient is φ = 44345700.

The previous prime is 48780269. The next prime is 48780301. The reversal of 48780281 is 18208784.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48780281 - 222 = 44585977 is a prime.

It is a super-2 number, since 2×487802812 = 4759031628877922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48780241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217275 + ... + 2217296.

It is an arithmetic number, because the mean of its divisors is an integer number (13303716).

Almost surely, 248780281 is an apocalyptic number.

It is an amenable number.

48780281 is a deficient number, since it is larger than the sum of its proper divisors (4434583).

48780281 is a wasteful number, since it uses less digits than its factorization.

48780281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434582.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 48780281 is about 6984.2881527039. The cubic root of 48780281 is about 365.3827997432.

The spelling of 48780281 in words is "forty-eight million, seven hundred eighty thousand, two hundred eighty-one".

Divisors: 1 11 4434571 48780281